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CH267283A - Process for the preparation of a copper-compatible polyazo dye. - Google Patents

Process for the preparation of a copper-compatible polyazo dye.

Info

Publication number
CH267283A
CH267283A CH267283DA CH267283A CH 267283 A CH267283 A CH 267283A CH 267283D A CH267283D A CH 267283DA CH 267283 A CH267283 A CH 267283A
Authority
CH
Switzerland
Prior art keywords
copper
preparation
compatible
parts
polyazo dye
Prior art date
Application number
Other languages
German (de)
Inventor
Ag J R Geigy
Original Assignee
Ag J R Geigy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ag J R Geigy filed Critical Ag J R Geigy
Publication of CH267283A publication Critical patent/CH267283A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/02—Disazo dyes
    • C09B35/039—Disazo dyes characterised by the tetrazo component
    • C09B35/28—Disazo dyes characterised by the tetrazo component the tetrazo component containing two aryl nuclei linked by at least one of the groups —CON<, —SO2N<, —SO2—, or —SO2—O—

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)

Description

  

  Verfahren zur Herstellung eines kupferbaren     Polyazofarbstoffes.       Gegenstand vorliegenden Patentes ist ein  Verfahren zur Herstellung eines kupferbaren       Polyazofarbstoffes.    Das Verfahren ist da  durch gekennzeichnet, dass man 1     Mol        tetra-          zotiert.es        4,4'-Di-(3"-amino-4"-oxy-benzoyl-          amino)-3,3'-dimethoxy-diphenyl    mit 2     Mol          1-Oxy-naphthalin-4-sulfonsäure    in alkalischem  Medium vereinigt.  



  Der erhaltene neue     Disazofarbstoff    stellt  ein dunkles Pulver dar, das sich in Wasser mit  violetter, in konzentrierter Schwefelsäure mit  roter Farbe löst und welcher Baumwolle oder  Zellwolle in bordeauxroten Tönen anfärbt, die  durch     Nachkupferung    in ein reineres Bor  deaux von sehr guter Nass- und Lichtechtheit  übergehen.

      <I>Beispiel:</I>  51,4 Teile     4,4'-Di-(3"-amino-4"-oxy-benzoyl-          amino)-3,3'-dimethoxy-diphenyl    werden in 600  Teilen Wasser mit 8 Teilen Natronlauge kalt  gelöst, mit 13,8 Teilen     Natriumnitrit        vermischt     und in der Kälte unter Rühren auf 40 Teile       konz.        Salzsäure    und 80 Teile     Wasser        aufge-          tropft.    Nachdem die überschüssige Mineral  säure mit Soda abgestumpft wurde,

   vereinigt  man die erhaltene     grünstichig    gelbe Suspen  sion der     Tetrazoverbindung    mit einer kalten  alkalischen Lösung von 44,8 Teilen     1-Oxy-          naphthalin-4-sulfonsäureund    400 Teilen Was  ser in Gegenwart von 30 Teilen Soda und 150  Teilen     Pyridin.    Nach mehrstündigem Rühren  bei Raumtemperatur ist die Kupplung been  det. Der erhaltene     Disazofarbstoff    der Formel  
EMI0001.0028     
    wird mit Kochsalz gefällt,     abfiltriert    und  getrocknet.



  Process for the preparation of a copper-compatible polyazo dye. The present patent relates to a process for the preparation of a copperable polyazo dye. The process is characterized in that 1 mole of tetrazotiert.es 4,4'-di- (3 "-amino-4" -oxy-benzoyl-amino) -3,3'-dimethoxy-diphenyl with 2 moles 1-Oxy-naphthalene-4-sulfonic acid combined in an alkaline medium.



  The new disazo dye obtained is a dark powder that dissolves in water with a violet color, in concentrated sulfuric acid with a red color and which dyes cotton or rayon in burgundy shades, which after copper plating transforms into a purer boron deaux of very good wet and light fastness .

      <I> Example: </I> 51.4 parts of 4,4'-di- (3 "-amino-4" -oxy-benzoyl-amino) -3,3'-dimethoxy-diphenyl are in 600 parts of water with 8 parts of sodium hydroxide solution dissolved cold, mixed with 13.8 parts of sodium nitrite and concentrated in the cold with stirring to 40 parts. Hydrochloric acid and 80 parts of water were added dropwise. After the excess mineral acid has been blunted with soda,

   the resulting greenish yellow suspension of the tetrazo compound is combined with a cold alkaline solution of 44.8 parts of 1-oxynaphthalene-4-sulfonic acid and 400 parts of water in the presence of 30 parts of soda and 150 parts of pyridine. After several hours of stirring at room temperature, the coupling has ended. The obtained disazo dye of the formula
EMI0001.0028
    is precipitated with common salt, filtered off and dried.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines kupfer baren Polyazofarbstoffes, dadurch gekenn zeichnet, dass man 1 11o1 tetrazotiertes 4,4'- Di- (3"-amino-4"-oxy-benzoylamino) -3,3'-dime- thoxy-diphenyl mit 2 Mol 1-Oxy-naphthalin- 4-sulfonsäure in alkalischem Medium vereinigt. PATENT CLAIM: Process for the production of a copper-ble polyazo dye, characterized in that 1 11o1 tetrazotized 4,4'-di- (3 "-amino-4" -oxy-benzoylamino) -3,3'-dimethoxy-diphenyl combined with 2 moles of 1-oxynaphthalene-4-sulfonic acid in an alkaline medium. Der erhaltene neue Disazofarbstoff stellt ein dunkles Pulver dar, das sich in Wasser mit violetter, in konzentrierter Schwefelsäure mit roter Farbe löst und welcher Baumwolle oder Zellwolle in bordeauxroten Tönen anfärbt, die durch Nachkupferung in ein reineres Bor deaux von sehr guter Nass- und Lichtechtheit übergehen. The new disazo dye obtained is a dark powder that dissolves in water with a violet color, in concentrated sulfuric acid with a red color and which dyes cotton or rayon in burgundy shades, which after copper plating transforms into a purer boron deaux of very good wet and light fastness .
CH267283D 1947-09-15 1947-09-15 Process for the preparation of a copper-compatible polyazo dye. CH267283A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH261632T 1947-09-15
CH267283T 1947-09-15

Publications (1)

Publication Number Publication Date
CH267283A true CH267283A (en) 1950-03-15

Family

ID=25730489

Family Applications (1)

Application Number Title Priority Date Filing Date
CH267283D CH267283A (en) 1947-09-15 1947-09-15 Process for the preparation of a copper-compatible polyazo dye.

Country Status (1)

Country Link
CH (1) CH267283A (en)

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